C222123232321333131133133313331323133313231333133312131323231212121   >>    C22212323232133313113313331333132313331323133313331213132323121212   <<    C222123232321333131133133313331323133313231333133312131323231212123   >>      C222123232321333131133133313331323133313231333133312131323231212122   >>